Category: P

The principal cell of the pineal gland. It contains pale-staining cytoplasm and has long processes that terminate in bulbous expansions.  

A rare tumor, typically of the jaw, consisting of malignant epithelial cells with a polyhedral shape and deposits of cementum. It is often associated with an impacted tooth.  

A device for objectively measuring the strength of hand pinch in grams or pounds.  

A fatty outgrowth of the conjunctiva.  

Introduction of hairs, by use of a pneumatic gun, into an aneurysm to induce clotting in the aneurysmal sac. It has been used in treating intracranial aneurysms.  

Encysted and containing hair, said of a dermoid cyst.  

A test used to diagnose cystic fibrosis in which sweat glands on the skin are stimulated by an electrode after the skin has been wetted with pilocarpine. Elevated levels of chloride in the sweat establish the diagnosis.  

A temporary form of artificial leg, especially a peg-leg type of stump.  

Folds of mucous membrane, one on each side of the fauces and between which is situated the palatine tonsil. The anterior pillar (in front of the tonsil) is also called the glossopalatine arch; the posterior pillar (behind the tonsil) is also called the pharyngopalatine arch.  

One of two groups of cells (inner and outer) resting on the basement membrane of the organ of Corti in which elongated bodies (pillars) develop. These enclose the inner tunnel (Corti’s tunnel).